body{
    color: white;
    background-color: rgb(70, 69, 69);
}
.to-do-list__container{
    display: flex;
    flex-direction: column;
    align-items: center;
}

input[type="text"]{
    font-size: 1.5em;
    padding: 10px;
}

.btn{
    margin-left: 10px;
    padding: 10px 20px;
    font-size: 1.5em;
    box-sizing: border-box;
    height: 50.4px;
    border: none;
    border-radius: 5px;
    color: white;
    /* 增加过渡效果，更加丝滑 */
    transition: background-color .25s ease;
}

.add-btn{
    background-color: green;
}

.add-btn:hover{
    background-color: rgb(10, 158, 10);
}

.delete-btn{
    background-color: rgb(135, 8, 8);
}

.delete-btn:hover{
    background-color: rgb(190, 15, 15);
}


.move-btn{
    background-color: rgb(7, 113, 127);
}

.move-btn:hover{
    background-color: rgb(18, 150, 183);
}

ol{
    list-style: none;
    padding: 0;
    min-width: 500px;
}

li{
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 15px;
    padding: 15px;
    color: black;
    background-color: white;
    border-radius: 5px;
}

li:hover{
    box-shadow: 3px 3px 2px white;
}

li .text{
    flex:1;
    font-size: 1.6em;
}